steveinillinois

I have the exact same issue, and I am definitely not using a beta version of Chrome. My version number is the same as bbinnard's, except there's no "beta" in it. I did a little experimentation and discovered that the issue only occurs if "Internet History" (under Applications > Google Chrome) is checked. Running CCleaner with that box checked logs me out of Chrome; when I restart the browser, Chrome complains that it can't find my settings. Logging back in puts everything back to normal. This is really just an inconvenience, as it's just a matter of logging in manually, but it's weird that it just started happening this week. Edit: I just discovered that this is being addressed in another thread. Sorry about that!

I had the same problem, and I think that the Chrome sync is definitely the culprit. You either need to stop using sync entirely, or tell Chrome not to sync your history anymore. Try one of these: in Chrome, go into Settings -> Advanced Sync Settings and uncheck "Omnibox History." Then clear your browsing history in Chrome and close it. From then on, CCleaner's cleaning should work. OR Go into Google Dashboard, scroll down to "Chrome sync" and click "Stop sync and delete data from Google." OR sign out on Chrome and don't ever sign in again.

I've noticed the same behavior; it happens even if I leave index.dat unchecked in CC. Try leaving "History" unchecked, or go into IE and clear the history there before running CC. I'd also suggest keeping the IE history setting to something much lower than the default 20 days.